Table 3 Patients without patient-reported drug allergies (PRAs) versus those with one versus patients with more than one

Age at time of surgery (years)

24 ± 9

27 ± 11

29 ± 6

0.02*

Sex

 Male

31 (33%)

9 (27%)

3 (21%)

0.61

 Female

63 (67%)

24 (73%)

11 (79%)

Sports participation

42 (45%)

16 (48%)

6 (43%)

0.88

Concomitant procedures

 Primary TTO

43 (46%)

16 (48%)

5 (36%)

0.72

 Meniscectomy

3 (3%)

2 (6%)

0 (0%)

0.77

 Chondroplasty

45 (48%)

10 (30%)

7 (50%)

0.38

 Loose body removal

10 (11%)

4 (12%)

1 (7%)

0.91

Subsequent surgery

 Any reoperation

7 (7%)

4 (12%)

3 (21%)

0.16

 Revision

2 (2%)

1 (3%)

0 (0%)

1.00

 Removal of hardware

2 (2%)

0 (0%)

1 (7%)

0.39

 MUA

2 (2%)

2 (6%)

1 (7%)

0.23

 Secondary TTO

1 (1%)

1 (3%)

0 (0%)

0.56

 TKA

0 (0%)

0 (0%)

1 (7%)

0.10

Follow-up time (months)

45 ± 27

52 ± 30

49 ± 23

0.37

Outcomes

 Recurrent instability

11 (12%)

3 (9%)

3 (21%)

0.43

 VAS (overall)

15 ± 21

12 ± 19

11 ± 19

0.47

 VAS (sports)

28 ± 28

21 ± 25

31 ± 30

0.51

 Kujala score

85 ± 16

85 ± 15

83 ± 17

0.80

 MPFL-RSI score

59 ± 27

63 ± 28

56 ± 29

0.77

 Satisfaction score

83 ± 27

86 ± 19

81 ± 34

0.96

 Would repeat surgery

77 (82%)

27 (82%)

13 (93%)

0.58

 Return to sport

20 (48%)

6 (38%)

3 (50%)

0.74

 Return to sport at presymptomatic level

15 (36%)

4 (25%)

1 (17%)

0.32

 Time to return to sport

(months)

9 ± 5

9 ± 8

14 ± 2

0.17